11966719185 has 48 divisors (see below), whose sum is σ = 21298140864. Its totient is φ = 6212255616.

The previous prime is 11966719153. The next prime is 11966719189. The reversal of 11966719185 is 58191766911.

It is a happy number.

It is not a de Polignac number, because 11966719185 - 2⁵ = 11966719153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11966719189) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 556402 + ... + 577508.

It is an arithmetic number, because the mean of its divisors is an integer number (443711268).

Almost surely, 2^11966719185 is an apocalyptic number.

11966719185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11966719185 is a deficient number, since it is larger than the sum of its proper divisors (9331421679).

11966719185 is a wasteful number, since it uses less digits than its factorization.

11966719185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21454 (or 21451 counting only the distinct ones).

The product of its digits is 816480, while the sum is 54.

The spelling of 11966719185 in words is "eleven billion, nine hundred sixty-six million, seven hundred nineteen thousand, one hundred eighty-five".